I am in Carlsbad, I noticed your post.
I know a gal in La Jolla that is always looking for a cabin mate.
I myself will not take the chance sharing a cabin with anybody unless I was attracted to that person and vs versa.
I can put you in touch, her name is Cynthia.
Cynthia called me yesterday, she booked Carnival back to back from San Jaun in two weeks.